/Engine/Plugins/FX/Niagara/Source/Niagara/Public/NiagaraRendererRibbons.h
int32 CalculateTessellationFactor ( const [FNiagaraSceneProxy](API\Plugins\Niagara\FNiagaraSceneProxy) * SceneProxy, const [FSceneView](API\Runtime\Engine\FSceneView) * View, const FVector & ViewOriginForDistanceCulling ) const